Results 61 to 70 of about 25,619 (230)
Beilstein Journal of Organic Chemistry, 2011 An efficient synthesis of 1,3-diaryl-4-halo-1H-pyrazoles was achieved. The synthesis involves the [3 + 2] dipolar cycloaddition of 3-arylsydnones and 2-aryl-1,1-dihalo-1-alkenes. The process proceeds smoothly in moderate to excellent yields. 1,3-Diaryl-4-
Yiwen Yang +4 more
doaj +1 more source
2,2-Diethyl 3,4-dimethyl 5-(4-cyanophenyl)pyrrolidine-2,2,3,4-tetracarboxylate
Acta Crystallographica Section E, 2012 The title compound, C21H24N2O8, was synthesized by a 1,3-dipolar cycloaddition reaction of dimethyl fumarate, diethyl 2-aminomalonate and 4-cyanobenzaldehyde.
Long He
doaj +1 more source
Chemistry – A European Journal, EarlyView.A synthetic methodology has been developed to prepare multifunctional M6P and M6Pn ligands of different valency. The glycopeptides were conjugated to cetuximab and then examined to mediate cellular uptake of fluorescently labeled EGFRvIII. Only cetuximab modified by glycopeptides having 3 or 6 M6P or M6Pn residues demonstrated greater uptake.
Patrycja Lenartowicz +6 more
wiley +1 more source
Studies in Conjugated lmines: Nucleophilic Additions and the 1 ,3-Dipolar Cycloadditions
, 1970 Studies in Conjugated lmines: Nucleophilic Additions and the 1 ,3-Dipolar ...
Singh, Nazar, P. S. Sethi
openaire +1 more source
Flipping the Card With Enantiodivergent Organocatalysis
Chemistry – A European Journal, EarlyView.This minireview elaborates on recent organocatalytic strategies for achieving enantiodivergence—the ability to access both product enantiomers using a single chiral catalyst. It highlights how achiral stimuli, such as solvent polarity and chemical additives, along with minimal catalyst modifications, trigger stereochemical inversions in reactions ...
Debora Iapadre +3 more
wiley +1 more source
Cristais líquidos termotrópicos calamíticos contendo o heterociclo [1,2,3]-triazol 1,4-dissubstituído [PDF]
, 2006 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em QuímicaA síntese e as propriedades térmicas de cinco séries homólogas de compostos calamíticos lineares e não lineares,
Santos, Deise Maria Pereira de Oliveira
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Diethyl indolizine-1,3-dicarboxylate
Acta Crystallographica Section E, 2011 The title compound, C14H15NO4, was prepared by a 1,3-dipolar cycloaddition from N-(ethoxycarbonylmethy)pyridinium bromide and ethyl acrylate. The –CO2 side chains form dihedral angles of 0.2 (3) and 2.4 (3)° with ...
Bing-Xiang Wang +3 more
doaj +1 more source
Organocatalytic Formal (3+2+1)‐Cycloaddition of Allenoates, Michael Acceptors, and Carbaldehydes
Chemistry – A European Journal, EarlyView.The use of secondary amine Lewis base organocatalysts allows for the unprecedented activation of allenoates for formal (3+2+1)‐cycloadditions with Michael acceptors and aromatic carbaldehydes. ABSTRACT Employing secondary amines as covalently interacting Lewis basic organocatalysts allows for the activation of electron‐deficient allenes (allenoates ...
David Naderer +5 more
wiley +1 more source
Chemistry – A European Journal, EarlyView.Per‐ethylene‐glycol (EG)‐functionalized resorcin[4]arenes containing 12, 16, and 20 EG groups namely compounds 1d, 1e, and 1f, respectively, were prepared and found to self‐assemble, in organic solvents, into hexameric capsules. These capsules are more dynamic than the ones prepared based on alkyl substituted resorcin[4]arenes.
Gangadhara Angajala +3 more
wiley +1 more source
Quantification of the electrophilic reactivities of nitroalkenes [PDF]
, 2012 While a large variety of nucleophiles (N and sN) have been characterized according to eq 1.3, the number of E parameters for electrophiles, and specifically for different classes of Michael acceptors remains relatively small.
Zenz, Ivo
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